environment

package
v0.29.6 Latest Latest
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 Go to latest Published: Jan 19, 2023 License: AGPL-3.0 Imports: 39 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	FungibleTokenAccountIndex = 2
	FlowTokenAccountIndex     = 3
	FlowFeesAccountIndex      = 4
)
View Source 
const (
	// [2_000, 3_000) reserved for the FVM
	ComputationKindHash                       = 2001
	ComputationKindVerifySignature            = 2002
	ComputationKindAddAccountKey              = 2003
	ComputationKindAddEncodedAccountKey       = 2004
	ComputationKindAllocateStorageIndex       = 2005
	ComputationKindCreateAccount              = 2006
	ComputationKindEmitEvent                  = 2007
	ComputationKindGenerateUUID               = 2008
	ComputationKindGetAccountAvailableBalance = 2009
	ComputationKindGetAccountBalance          = 2010
	ComputationKindGetAccountContractCode     = 2011
	ComputationKindGetAccountContractNames    = 2012
	ComputationKindGetAccountKey              = 2013
	ComputationKindGetBlockAtHeight           = 2014
	ComputationKindGetCode                    = 2015
	ComputationKindGetCurrentBlockHeight      = 2016
	ComputationKindGetProgram                 = 2017
	ComputationKindGetStorageCapacity         = 2018
	ComputationKindGetStorageUsed             = 2019
	ComputationKindGetValue                   = 2020
	ComputationKindRemoveAccountContractCode  = 2021
	ComputationKindResolveLocation            = 2022
	ComputationKindRevokeAccountKey           = 2023
	ComputationKindRevokeEncodedAccountKey    = 2024
	ComputationKindSetProgram                 = 2025
	ComputationKindSetValue                   = 2026
	ComputationKindUpdateAccountContractCode  = 2027
	ComputationKindValidatePublicKey          = 2028
	ComputationKindValueExists                = 2029
	ComputationKindAccountKeysCount           = 2030
	ComputationKindBLSVerifyPOP               = 2031
	ComputationKindBLSAggregateSignatures     = 2032
	ComputationKindBLSAggregatePublicKeys     = 2033
)
View Source 
const (
	DefaultEventCollectionByteSizeLimit = 256_000 // 256KB
)
View Source 
const (
	MaxPublicKeyCount = math.MaxUint64
)

Variables

This section is empty.

Functions

func ContractKey 

func ContractKey(contractName string) string

func FlowFeesAddress 

func FlowFeesAddress(chain flow.Chain) flow.Address

func FlowToRuntimeAccountKey 

func FlowToRuntimeAccountKey(flowKey flow.AccountPublicKey) (*runtime.AccountKey, error)

func IsServiceEvent 

func IsServiceEvent(event cadence.Event, chain flow.ChainID) (bool, error)

IsServiceEvent determines whether or not an emitted Cadence event is considered a service event for the given chain.

func IsValidAccountKeyHashAlgo 

func IsValidAccountKeyHashAlgo(algo hash.HashingAlgorithm) bool

func IsValidAccountKeySignAlgo 

func IsValidAccountKeySignAlgo(algo crypto.SigningAlgorithm) bool

func KeyPublicKey 

func KeyPublicKey(index uint64) string

func NewAccountFreezer 

func NewAccountFreezer(
	serviceAddress flow.Address,
	accounts Accounts,
	transactionInfo TransactionInfo,
) *accountFreezer

func NewAccountKeyUpdater 

func NewAccountKeyUpdater(
	tracer tracing.TracerSpan,
	meter Meter,
	accounts Accounts,
	txnState *state.TransactionState,
	env Environment,
) *accountKeyUpdater

func NewAccountPublicKey 

func NewAccountPublicKey(publicKey *runtime.PublicKey,
	hashAlgo sema.HashAlgorithm,
	keyIndex int,
	weight int,
) (
	*flow.AccountPublicKey,
	error,
)

NewAccountPublicKey construct an account public key given a runtime public key.

func NewScriptEnvironment 

func NewScriptEnvironment(
	ctx context.Context,
	tracer tracing.TracerSpan,
	params EnvironmentParams,
	txnState *state.TransactionState,
	derivedTxnData DerivedTransactionData,
) *facadeEnvironment

func NewTransactionEnvironment 

func NewTransactionEnvironment(
	tracer tracing.TracerSpan,
	params EnvironmentParams,
	txnState *state.TransactionState,
	derivedTxnData DerivedTransactionData,
) *facadeEnvironment

func NewUUIDGenerator 

func NewUUIDGenerator(
	tracer tracing.TracerSpan,
	meter Meter,
	txnState *state.TransactionState,
) *uUIDGenerator

func RegisterSize 

func RegisterSize(address flow.Address, key string, value flow.RegisterValue) int

func ServiceAddress 

func ServiceAddress(chain flow.Chain) flow.Address

func StorageMBUFixToBytesUInt 

func StorageMBUFixToBytesUInt(result cadence.Value) uint64

StorageMBUFixToBytesUInt converts the return type of storage capacity which is a UFix64 with the unit of megabytes to UInt with the unit of bytes

Types

type AccountCreator 

type AccountCreator interface {
	CreateAccount(payer runtime.Address) (runtime.Address, error)
}

func NewAccountCreator 

func NewAccountCreator(
	txnState *state.TransactionState,
	chain flow.Chain,
	accounts Accounts,
	isServiceAccountEnabled bool,
	tracer tracing.TracerSpan,
	meter Meter,
	metrics MetricsReporter,
	systemContracts *SystemContracts,
) AccountCreator

func NewParseRestrictedAccountCreator 

func NewParseRestrictedAccountCreator(
	txnState *state.TransactionState,
	creator AccountCreator,
) AccountCreator

type AccountFreezer 

type AccountFreezer interface {
	// Note that the script variant will return OperationNotSupportedError.
	SetAccountFrozen(address common.Address, frozen bool) error

	FrozenAccounts() []common.Address

	Reset()
}

AccountFreezer disables accounts.

Note that scripts cannot freeze accounts, but must expose the API in compliance with the environment interface.

func NewParseRestrictedAccountFreezer 

func NewParseRestrictedAccountFreezer(
	txnState *state.TransactionState,
	impl AccountFreezer,
) AccountFreezer

type AccountInfo 

type AccountInfo interface {
	GetStorageUsed(address common.Address) (uint64, error)
	GetStorageCapacity(address common.Address) (uint64, error)
	GetAccountBalance(address common.Address) (uint64, error)
	GetAccountAvailableBalance(address common.Address) (uint64, error)
	GetAccount(address flow.Address) (*flow.Account, error)
}

AccountInfo exposes various account balance and storage statistics.

func NewAccountInfo 

func NewAccountInfo(
	tracer tracing.TracerSpan,
	meter Meter,
	accounts Accounts,
	systemContracts *SystemContracts,
	serviceAccountEnabled bool,
) AccountInfo

func NewParseRestrictedAccountInfo 

func NewParseRestrictedAccountInfo(
	txnState *state.TransactionState,
	impl AccountInfo,
) AccountInfo

type AccountKeyReader 

type AccountKeyReader interface {
	// GetAccountKey retrieves a public key by index from an existing account.
	//
	// This function returns a nil key with no errors, if a key doesn't exist at
	// the given index. An error is returned if the specified account does not
	// exist, the provided index is not valid, or if the key retrieval fails.
	GetAccountKey(
		address runtime.Address,
		keyIndex int,
	) (
		*runtime.AccountKey,
		error,
	)
	AccountKeysCount(address runtime.Address) (uint64, error)
}

AccountKeyReader provide read access to account keys.

func NewAccountKeyReader 

func NewAccountKeyReader(
	tracer tracing.TracerSpan,
	meter Meter,
	accounts Accounts,
) AccountKeyReader

func NewParseRestrictedAccountKeyReader 

func NewParseRestrictedAccountKeyReader(
	txnState *state.TransactionState,
	impl AccountKeyReader,
) AccountKeyReader

type AccountKeyUpdater 

type AccountKeyUpdater interface {
	// AddEncodedAccountKey adds an encoded public key to an existing account.
	//
	// This function returns an error if the specified account does not exist or
	// if the key insertion fails.
	//
	// Note that the script variant will return OperationNotSupportedError.
	AddEncodedAccountKey(address runtime.Address, publicKey []byte) error

	// RevokeEncodedAccountKey revokes a public key by index from an existing
	// account.
	//
	// This function returns an error if the specified account does not exist,
	// the provided key is invalid, or if key revoking fails.
	//
	// Note that the script variant will return OperationNotSupportedError.
	RevokeEncodedAccountKey(
		address runtime.Address,
		index int,
	) (
		[]byte,
		error,
	)

	// AddAccountKey adds a public key to an existing account.
	//
	// This function returns an error if the specified account does not exist or
	// if the key insertion fails.
	//
	// Note that the script variant will return OperationNotSupportedError.
	AddAccountKey(
		address runtime.Address,
		publicKey *runtime.PublicKey,
		hashAlgo runtime.HashAlgorithm,
		weight int,
	) (
		*runtime.AccountKey,
		error,
	)

	// RevokeAccountKey revokes a public key by index from an existing account,
	// and returns the revoked key.
	//
	// This function returns a nil key with no errors, if a key doesn't exist
	// at the given index.  An error is returned if the specified account does
	// not exist, the provided index is not valid, or if the key revoking
	// fails.
	//
	// Note that the script variant will return OperationNotSupportedError.
	RevokeAccountKey(
		address runtime.Address,
		keyIndex int,
	) (
		*runtime.AccountKey,
		error,
	)
}

AccountKeyUpdater handles all account keys modification.

Note that scripts cannot modify account keys, but must expose the API in compliance with the runtime environment interface.

type AccountStatus 

type AccountStatus [accountStatusSize]byte

AccountStatus holds meta information about an account

currently modelled as a byte array with on-demand encoding/decoding of sub arrays the first byte captures flags (e.g. frozen) the next 8 bytes (big-endian) captures storage used by an account the next 8 bytes (big-endian) captures the storage index of an account and the last 8 bytes (big-endian) captures the number of public keys stored on this account

func AccountStatusFromBytes 

func AccountStatusFromBytes(inp []byte) (*AccountStatus, error)

AccountStatusFromBytes constructs an AccountStatus from the given byte slice

func NewAccountStatus 

func NewAccountStatus() *AccountStatus

NewAccountStatus returns a new AccountStatus sets the storage index to the init value

func (*AccountStatus) IsAccountFrozen 

func (a *AccountStatus) IsAccountFrozen() bool

IsAccountFrozen returns true if account's frozen flag is set

func (*AccountStatus) PublicKeyCount 

func (a *AccountStatus) PublicKeyCount() uint64

PublicKeyCount returns the public key count of the account

func (*AccountStatus) SetFrozenFlag 

func (a *AccountStatus) SetFrozenFlag(frozen bool)

SetFrozenFlag sets the frozen flag

func (*AccountStatus) SetPublicKeyCount 

func (a *AccountStatus) SetPublicKeyCount(count uint64)

SetPublicKeyCount updates the public key count of the account

func (*AccountStatus) SetStorageIndex 

func (a *AccountStatus) SetStorageIndex(index atree.StorageIndex)

SetStorageIndex updates the storage index of the account

func (*AccountStatus) SetStorageUsed 

func (a *AccountStatus) SetStorageUsed(used uint64)

SetStorageUsed updates the storage used by the account

func (*AccountStatus) StorageIndex 

func (a *AccountStatus) StorageIndex() atree.StorageIndex

StorageIndex returns the storage index of the account

func (*AccountStatus) StorageUsed 

func (a *AccountStatus) StorageUsed() uint64

StorageUsed returns the storage used by the account

func (*AccountStatus) ToBytes 

func (a *AccountStatus) ToBytes() []byte

ToBytes converts AccountStatus to a byte slice

this has been kept this way in case one day we decided to move on to use an struct to represent account status.

type Accounts 

type Accounts interface {
	Exists(address flow.Address) (bool, error)
	Get(address flow.Address) (*flow.Account, error)
	GetPublicKeyCount(address flow.Address) (uint64, error)
	AppendPublicKey(address flow.Address, key flow.AccountPublicKey) error
	GetPublicKey(address flow.Address, keyIndex uint64) (flow.AccountPublicKey, error)
	SetPublicKey(address flow.Address, keyIndex uint64, publicKey flow.AccountPublicKey) ([]byte, error)
	GetContractNames(address flow.Address) ([]string, error)
	GetContract(contractName string, address flow.Address) ([]byte, error)
	ContractExists(contractName string, address flow.Address) (bool, error)
	SetContract(contractName string, address flow.Address, contract []byte) error
	DeleteContract(contractName string, address flow.Address) error
	Create(publicKeys []flow.AccountPublicKey, newAddress flow.Address) error
	GetValue(address flow.Address, key string) (flow.RegisterValue, error)
	CheckAccountNotFrozen(address flow.Address) error
	GetStorageUsed(address flow.Address) (uint64, error)
	SetValue(address flow.Address, key string, value flow.RegisterValue) error
	AllocateStorageIndex(address flow.Address) (atree.StorageIndex, error)
	SetAccountFrozen(address flow.Address, frozen bool) error
}

type AddressGenerator 

type AddressGenerator interface {
	Bytes() []byte
	NextAddress() (flow.Address, error)
	CurrentAddress() flow.Address
	AddressCount() uint64
}

func NewAddressGenerator 

func NewAddressGenerator(
	txnState *state.TransactionState,
	chain flow.Chain,
) AddressGenerator

type BlockInfo 

type BlockInfo interface {
	// GetCurrentBlockHeight returns the current block height.
	GetCurrentBlockHeight() (uint64, error)

	// GetBlockAtHeight returns the block at the given height.
	GetBlockAtHeight(
		height uint64,
	) (
		runtime.Block,
		bool,
		error,
	)
}

func NewBlockInfo 

func NewBlockInfo(
	tracer tracing.TracerSpan,
	meter Meter,
	blockHeader *flow.Header,
	blocks Blocks,
) BlockInfo

func NewParseRestrictedBlockInfo 

func NewParseRestrictedBlockInfo(
	txnState *state.TransactionState,
	impl BlockInfo,
) BlockInfo

type BlockInfoParams 

type BlockInfoParams struct {
	Blocks      Blocks
	BlockHeader *flow.Header
}

func DefaultBlockInfoParams 

func DefaultBlockInfoParams() BlockInfoParams

type Blocks 

type Blocks interface {
	// ByHeight returns the block at the given height in the chain ending in `header` (or finalized
	// if `header` is nil). This enables querying un-finalized blocks by height with respect to the
	// chain defined by the block we are executing.
	ByHeightFrom(height uint64, header *flow.Header) (*flow.Header, error)
}

func NewBlockFinder 

func NewBlockFinder(storage storage.Headers) Blocks

NewBlockFinder constructs a new block finder

type BlocksFinder 

type BlocksFinder struct {
	// contains filtered or unexported fields
}

BlocksFinder finds blocks and return block headers

func (*BlocksFinder) ByHeightFrom 

func (finder *BlocksFinder) ByHeightFrom(height uint64, header *flow.Header) (*flow.Header, error)

ByHeightFrom returns the block header by height.

type BootstrapAccountCreator 

type BootstrapAccountCreator interface {
	CreateBootstrapAccount(
		publicKeys []flow.AccountPublicKey,
	) (
		flow.Address,
		error,
	)
}

func NewBootstrapAccountCreator 

func NewBootstrapAccountCreator(
	txnState *state.TransactionState,
	chain flow.Chain,
	accounts Accounts,
) BootstrapAccountCreator

type CadenceEventEncoder 

type CadenceEventEncoder struct{}

func NewCadenceEventEncoder 

func NewCadenceEventEncoder() *CadenceEventEncoder

func (*CadenceEventEncoder) Encode 

func (e *CadenceEventEncoder) Encode(event cadence.Event) ([]byte, error)

type ContractFunctionSpec 

type ContractFunctionSpec struct {
	AddressFromChain func(flow.Chain) flow.Address
	LocationName     string
	FunctionName     string
	ArgumentTypes    []sema.Type
}

ContractFunctionSpec specify all the information, except the function's address and arguments, needed to invoke the contract function.

type ContractReader 

type ContractReader struct {
	// contains filtered or unexported fields
}

ContractReader provide read access to contracts.

func NewContractReader 

func NewContractReader(
	tracer tracing.TracerSpan,
	meter Meter,
	accounts Accounts,
) *ContractReader

func (*ContractReader) GetAccountContractCode 

func (reader *ContractReader) GetAccountContractCode(
	address runtime.Address,
	name string,
) (
	code []byte,
	err error,
)

func (*ContractReader) GetAccountContractNames 

func (reader *ContractReader) GetAccountContractNames(
	address runtime.Address,
) (
	[]string,
	error,
)

func (*ContractReader) GetCode 

func (reader *ContractReader) GetCode(
	location runtime.Location,
) (
	[]byte,
	error,
)

func (*ContractReader) ResolveLocation 

func (reader *ContractReader) ResolveLocation(
	identifiers []runtime.Identifier,
	location runtime.Location,
) (
	[]runtime.ResolvedLocation,
	error,
)

type ContractUpdate 

type ContractUpdate struct {
	ContractUpdateKey
	Code []byte
}

type ContractUpdateKey 

type ContractUpdateKey struct {
	Address common.Address
	Name    string
}

type ContractUpdater 

type ContractUpdater interface {
	// Cadence's runtime API.  Note that the script variant will return
	// OperationNotSupportedError.
	UpdateAccountContractCode(
		address runtime.Address,
		name string,
		code []byte,
	) error

	// Cadence's runtime API.  Note that the script variant will return
	// OperationNotSupportedError.
	RemoveAccountContractCode(address runtime.Address, name string) error

	Commit() ([]ContractUpdateKey, error)

	Reset()
}

ContractUpdater handles all smart contracts modification. It also captures all changes as deltas and only commit them when called so smart contract updates can be delayed until end of the tx execution.

Note that scripts cannot modify smart contracts, but must expose the API in compliance with the runtime environment interface.

type ContractUpdaterImpl 

type ContractUpdaterImpl struct {
	ContractUpdaterStubs
	// contains filtered or unexported fields
}

func NewContractUpdater 

func NewContractUpdater(
	tracer tracing.TracerSpan,
	meter Meter,
	accounts Accounts,
	transactionInfo TransactionInfo,
	chain flow.Chain,
	params ContractUpdaterParams,
	logger *ProgramLogger,
	systemContracts *SystemContracts,
	runtime *Runtime,
) *ContractUpdaterImpl

func NewContractUpdaterForTesting 

func NewContractUpdaterForTesting(
	accounts Accounts,
	stubs ContractUpdaterStubs,
) *ContractUpdaterImpl

func (*ContractUpdaterImpl) Commit 

func (updater *ContractUpdaterImpl) Commit() ([]ContractUpdateKey, error)

func (*ContractUpdaterImpl) HasUpdates 

func (updater *ContractUpdaterImpl) HasUpdates() bool

func (*ContractUpdaterImpl) RemoveAccountContractCode 

func (updater *ContractUpdaterImpl) RemoveAccountContractCode(
	address runtime.Address,
	name string,
) error

func (*ContractUpdaterImpl) RemoveContract 

func (updater *ContractUpdaterImpl) RemoveContract(
	address runtime.Address,
	name string,
	signingAccounts []runtime.Address,
) (err error)

func (*ContractUpdaterImpl) Reset 

func (updater *ContractUpdaterImpl) Reset()

func (*ContractUpdaterImpl) SetContract 

func (updater *ContractUpdaterImpl) SetContract(
	address runtime.Address,
	name string,
	code []byte,
	signingAccounts []runtime.Address,
) (err error)

func (*ContractUpdaterImpl) UpdateAccountContractCode 

func (updater *ContractUpdaterImpl) UpdateAccountContractCode(
	address runtime.Address,
	name string,
	code []byte,
) error

type ContractUpdaterParams 

type ContractUpdaterParams struct {
	// Depricated: RestrictedDeploymentEnabled is deprecated use
	// SetIsContractDeploymentRestrictedTransaction instead.
	// Can be removed after all networks are migrated to
	// SetIsContractDeploymentRestrictedTransaction
	RestrictContractDeployment bool
	RestrictContractRemoval    bool
}

func DefaultContractUpdaterParams 

func DefaultContractUpdaterParams() ContractUpdaterParams

type ContractUpdaterStubs 

type ContractUpdaterStubs interface {
	RestrictedDeploymentEnabled() bool
	RestrictedRemovalEnabled() bool

	GetAuthorizedAccounts(path cadence.Path) []common.Address

	UseContractAuditVoucher(address runtime.Address, code []byte) (bool, error)
}

Expose stub interface for testing.

type CryptoLibrary 

type CryptoLibrary interface {
	Hash(
		data []byte,
		tag string,
		hashAlgorithm runtime.HashAlgorithm,
	) (
		[]byte,
		error,
	)

	VerifySignature(
		signature []byte,
		tag string,
		signedData []byte,
		publicKey []byte,
		signatureAlgorithm runtime.SignatureAlgorithm,
		hashAlgorithm runtime.HashAlgorithm,
	) (
		bool,
		error,
	)

	ValidatePublicKey(pk *runtime.PublicKey) error

	BLSVerifyPOP(
		pk *runtime.PublicKey,
		sig []byte,
	) (
		bool,
		error,
	)

	BLSAggregateSignatures(sigs [][]byte) ([]byte, error)

	BLSAggregatePublicKeys(
		keys []*runtime.PublicKey,
	) (
		*runtime.PublicKey,
		error,
	)
}

func NewCryptoLibrary 

func NewCryptoLibrary(tracer tracing.TracerSpan, meter Meter) CryptoLibrary

func NewParseRestrictedCryptoLibrary 

func NewParseRestrictedCryptoLibrary(
	txnState *state.TransactionState,
	impl CryptoLibrary,
) CryptoLibrary

type DerivedDataInvalidator 

type DerivedDataInvalidator struct {
	ContractUpdateKeys []ContractUpdateKey
	FrozenAccounts     []common.Address

	MeterParamOverridesUpdated bool
}

func NewDerivedDataInvalidator 

func NewDerivedDataInvalidator(
	contractKeys []ContractUpdateKey,
	env *facadeEnvironment,
) DerivedDataInvalidator

func (DerivedDataInvalidator) MeterParamOverridesInvalidator 

func (invalidator DerivedDataInvalidator) MeterParamOverridesInvalidator() derived.MeterParamOverridesInvalidator

func (DerivedDataInvalidator) ProgramInvalidator 

func (invalidator DerivedDataInvalidator) ProgramInvalidator() derived.ProgramInvalidator

type DerivedTransactionData 

type DerivedTransactionData interface {
	GetProgram(loc common.AddressLocation) (*derived.Program, *state.State, bool)
	SetProgram(loc common.AddressLocation, prog *derived.Program, state *state.State)
}

TODO(patrick): remove and switch to *programs.DerivedTransactionData once https://github.com/onflow/flow-emulator/pull/229 is integrated.

type Environment 

type Environment interface {
	runtime.Interface

	// Tracer
	StartChildSpan(
		name trace.SpanName,
		options ...otelTrace.SpanStartOption,
	) tracing.TracerSpan

	Meter

	// Runtime
	BorrowCadenceRuntime() *reusableRuntime.ReusableCadenceRuntime
	ReturnCadenceRuntime(*reusableRuntime.ReusableCadenceRuntime)

	TransactionInfo

	// ProgramLogger
	Logger() *zerolog.Logger
	Logs() []string

	// EventEmitter
	Events() []flow.Event
	ServiceEvents() []flow.Event

	// SystemContracts
	AccountsStorageCapacity(
		addresses []common.Address,
		payer common.Address,
		maxTxFees uint64,
	) (
		cadence.Value,
		error,
	)
	CheckPayerBalanceAndGetMaxTxFees(
		payer flow.Address,
		inclusionEffort uint64,
		executionEffort uint64,
	) (
		cadence.Value,
		error,
	)
	DeductTransactionFees(
		payer flow.Address,
		inclusionEffort uint64,
		executionEffort uint64,
	) (
		cadence.Value,
		error,
	)

	// AccountInfo
	GetAccount(address flow.Address) (*flow.Account, error)

	AccountFreezer

	// FlushPendingUpdates flushes pending updates from the stateful environment
	// modules (i.e., ContractUpdater) to the state transaction, and return
	// corresponding modified sets invalidator.
	FlushPendingUpdates() (
		derived.TransactionInvalidator,
		error,
	)

	// Reset resets all stateful environment modules (e.g., ContractUpdater,
	// EventEmitter, AccountFreezer) to initial state.
	Reset()
}

Environment implements the accounts business logic and exposes cadence runtime interface methods for the runtime.

type EnvironmentParams 

type EnvironmentParams struct {
	Chain flow.Chain

	// NOTE: The ServiceAccountEnabled option is used by the playground
	// https://github.com/onflow/flow-playground-api/blob/1ad967055f31db8f1ce88e008960e5fc14a9fbd1/compute/computer.go#L76
	ServiceAccountEnabled bool

	RuntimeParams

	ProgramLoggerParams

	EventEmitterParams

	BlockInfoParams
	TransactionInfoParams

	ContractUpdaterParams
}

func DefaultEnvironmentParams 

func DefaultEnvironmentParams() EnvironmentParams

type EventCollection 

type EventCollection struct {
	// contains filtered or unexported fields
}

func NewEventCollection 

func NewEventCollection(meter Meter) *EventCollection

func (*EventCollection) AppendEvent 

func (collection *EventCollection) AppendEvent(event flow.Event, size uint64) error

func (*EventCollection) AppendServiceEvent 

func (collection *EventCollection) AppendServiceEvent(
	event flow.Event,
	size uint64,
) error

func (*EventCollection) Events 

func (collection *EventCollection) Events() []flow.Event

func (*EventCollection) ServiceEvents 

func (collection *EventCollection) ServiceEvents() []flow.Event

func (*EventCollection) TotalByteSize 

func (collection *EventCollection) TotalByteSize() uint64

func (*EventCollection) TotalEventCounter 

func (collection *EventCollection) TotalEventCounter() uint32

type EventEmitter 

type EventEmitter interface {
	// Cadence's runtime API.  Note that the script variant will return
	// OperationNotSupportedError.
	EmitEvent(event cadence.Event) error

	Events() []flow.Event
	ServiceEvents() []flow.Event

	Reset()
}

EventEmitter collect events, separates out service events, and enforces event size limits.

Note that scripts do not emit events, but must expose the API in compliance with the runtime environment interface.

func NewEventEmitter 

func NewEventEmitter(
	tracer tracing.TracerSpan,
	meter Meter,
	chain flow.Chain,
	txInfo TransactionInfoParams,
	params EventEmitterParams,
) EventEmitter

NewEventEmitter constructs a new eventEmitter

func NewParseRestrictedEventEmitter 

func NewParseRestrictedEventEmitter(
	txnState *state.TransactionState,
	impl EventEmitter,
) EventEmitter

type EventEmitterParams 

type EventEmitterParams struct {
	ServiceEventCollectionEnabled bool
	EventCollectionByteSizeLimit  uint64
	EventEncoder                  EventEncoder
}

func DefaultEventEmitterParams 

func DefaultEventEmitterParams() EventEmitterParams

type EventEncoder 

type EventEncoder interface {
	Encode(event cadence.Event) ([]byte, error)
}

type Meter 

type Meter interface {
	MeterComputation(common.ComputationKind, uint) error
	ComputationUsed() uint64
	ComputationIntensities() meter.MeteredComputationIntensities

	MeterMemory(usage common.MemoryUsage) error
	MemoryEstimate() uint64

	MeterEmittedEvent(byteSize uint64) error
	TotalEmittedEventBytes() uint64
}

func NewCancellableMeter 

func NewCancellableMeter(
	ctx context.Context,
	txnState *state.TransactionState,
) Meter

func NewMeter 

func NewMeter(txnState *state.TransactionState) Meter

type MeterParamOverridesInvalidator 

type MeterParamOverridesInvalidator struct {
	DerivedDataInvalidator
}

func (MeterParamOverridesInvalidator) ShouldInvalidateEntries 

func (invalidator MeterParamOverridesInvalidator) ShouldInvalidateEntries() bool

func (MeterParamOverridesInvalidator) ShouldInvalidateEntry 

func (invalidator MeterParamOverridesInvalidator) ShouldInvalidateEntry(
	_ struct{},
	_ derived.MeterParamOverrides,
	_ *state.State,
) bool

type MetricsReporter 

type MetricsReporter interface {
	RuntimeTransactionParsed(time.Duration)
	RuntimeTransactionChecked(time.Duration)
	RuntimeTransactionInterpreted(time.Duration)
	RuntimeSetNumberOfAccounts(count uint64)
}

MetricsReporter captures and reports metrics to back to the execution environment it is a setup passed to the context.

type NoAccountCreator 

type NoAccountCreator struct {
}

func (NoAccountCreator) CreateAccount 

func (NoAccountCreator) CreateAccount(
	payer runtime.Address,
) (
	runtime.Address,
	error,
)

type NoAccountFreezer 

type NoAccountFreezer struct{}

func (NoAccountFreezer) FrozenAccounts 

func (NoAccountFreezer) FrozenAccounts() []common.Address

func (NoAccountFreezer) Reset 

func (NoAccountFreezer) Reset()

func (NoAccountFreezer) SetAccountFrozen 

func (NoAccountFreezer) SetAccountFrozen(_ common.Address, _ bool) error

type NoAccountKeyUpdater 

type NoAccountKeyUpdater struct{}

func (NoAccountKeyUpdater) AddAccountKey 

func (NoAccountKeyUpdater) AddAccountKey(
	address runtime.Address,
	publicKey *runtime.PublicKey,
	hashAlgo runtime.HashAlgorithm,
	weight int,
) (
	*runtime.AccountKey,
	error,
)

func (NoAccountKeyUpdater) AddEncodedAccountKey 

func (NoAccountKeyUpdater) AddEncodedAccountKey(
	address runtime.Address,
	publicKey []byte,
) error

func (NoAccountKeyUpdater) RevokeAccountKey 

func (NoAccountKeyUpdater) RevokeAccountKey(
	address runtime.Address,
	keyIndex int,
) (
	*runtime.AccountKey,
	error,
)

func (NoAccountKeyUpdater) RevokeEncodedAccountKey 

func (NoAccountKeyUpdater) RevokeEncodedAccountKey(
	address runtime.Address,
	index int,
) (
	[]byte,
	error,
)

type NoContractUpdater 

type NoContractUpdater struct{}

func (NoContractUpdater) Commit 

func (NoContractUpdater) Commit() ([]ContractUpdateKey, error)

func (NoContractUpdater) RemoveAccountContractCode 

func (NoContractUpdater) RemoveAccountContractCode(
	address runtime.Address,
	name string,
) error

func (NoContractUpdater) Reset 

func (NoContractUpdater) Reset()

func (NoContractUpdater) UpdateAccountContractCode 

func (NoContractUpdater) UpdateAccountContractCode(
	address runtime.Address,
	name string,
	code []byte,
) error

type NoEventEmitter 

type NoEventEmitter struct{}

NoEventEmitter is usually used in the environment for script execution, where emitting an event does nothing.

func (NoEventEmitter) EmitEvent 

func (NoEventEmitter) EmitEvent(event cadence.Event) error

func (NoEventEmitter) Events 

func (NoEventEmitter) Events() []flow.Event

func (NoEventEmitter) Reset 

func (NoEventEmitter) Reset()

func (NoEventEmitter) ServiceEvents 

func (NoEventEmitter) ServiceEvents() []flow.Event

type NoTransactionInfo 

type NoTransactionInfo struct {
}

Scripts have no associated transaction information.

func (NoTransactionInfo) GetSigningAccounts 

func (NoTransactionInfo) GetSigningAccounts() ([]runtime.Address, error)

func (NoTransactionInfo) IsServiceAccountAuthorizer 

func (NoTransactionInfo) IsServiceAccountAuthorizer() bool

func (NoTransactionInfo) LimitAccountStorage 

func (NoTransactionInfo) LimitAccountStorage() bool

func (NoTransactionInfo) SigningAccounts 

func (NoTransactionInfo) SigningAccounts() []runtime.Address

func (NoTransactionInfo) TransactionFeesEnabled 

func (NoTransactionInfo) TransactionFeesEnabled() bool

func (NoTransactionInfo) TxID 

func (NoTransactionInfo) TxID() flow.Identifier

func (NoTransactionInfo) TxIndex 

func (NoTransactionInfo) TxIndex() uint32

type NoopBlockFinder 

type NoopBlockFinder struct{}

NoopBlockFinder implements the Blocks interface. It is used in the bootstrapping process.

func (NoopBlockFinder) ByHeightFrom 

func (NoopBlockFinder) ByHeightFrom(_ uint64, _ *flow.Header) (*flow.Header, error)

type NoopMetricsReporter 

type NoopMetricsReporter struct{}

NoopMetricsReporter is a MetricReporter that does nothing.

func (NoopMetricsReporter) RuntimeSetNumberOfAccounts 

func (NoopMetricsReporter) RuntimeSetNumberOfAccounts(count uint64)

RuntimeSetNumberOfAccounts is a noop

func (NoopMetricsReporter) RuntimeTransactionChecked 

func (NoopMetricsReporter) RuntimeTransactionChecked(time.Duration)

RuntimeTransactionChecked is a noop

func (NoopMetricsReporter) RuntimeTransactionInterpreted 

func (NoopMetricsReporter) RuntimeTransactionInterpreted(time.Duration)

RuntimeTransactionInterpreted is a noop

func (NoopMetricsReporter) RuntimeTransactionParsed 

func (NoopMetricsReporter) RuntimeTransactionParsed(time.Duration)

RuntimeTransactionParsed is a noop

type ParseRestrictedAccountCreator 

type ParseRestrictedAccountCreator struct {
	// contains filtered or unexported fields
}

This ensures cadence can't access unexpected operations while parsing programs.

func (ParseRestrictedAccountCreator) CreateAccount 

func (creator ParseRestrictedAccountCreator) CreateAccount(
	payer runtime.Address,
) (
	runtime.Address,
	error,
)

type ParseRestrictedAccountFreezer 

type ParseRestrictedAccountFreezer struct {
	// contains filtered or unexported fields
}

func (ParseRestrictedAccountFreezer) FrozenAccounts 

func (freezer ParseRestrictedAccountFreezer) FrozenAccounts() []common.Address

func (ParseRestrictedAccountFreezer) Reset 

func (freezer ParseRestrictedAccountFreezer) Reset()

func (ParseRestrictedAccountFreezer) SetAccountFrozen 

func (freezer ParseRestrictedAccountFreezer) SetAccountFrozen(
	address common.Address,
	frozen bool,
) error

type ParseRestrictedAccountInfo 

type ParseRestrictedAccountInfo struct {
	// contains filtered or unexported fields
}

func (ParseRestrictedAccountInfo) GetAccount 

func (info ParseRestrictedAccountInfo) GetAccount(
	address flow.Address,
) (
	*flow.Account,
	error,
)

func (ParseRestrictedAccountInfo) GetAccountAvailableBalance 

func (info ParseRestrictedAccountInfo) GetAccountAvailableBalance(
	address common.Address,
) (
	uint64,
	error,
)

func (ParseRestrictedAccountInfo) GetAccountBalance 

func (info ParseRestrictedAccountInfo) GetAccountBalance(
	address common.Address,
) (
	uint64,
	error,
)

func (ParseRestrictedAccountInfo) GetStorageCapacity 

func (info ParseRestrictedAccountInfo) GetStorageCapacity(
	address common.Address,
) (
	uint64,
	error,
)

func (ParseRestrictedAccountInfo) GetStorageUsed 

func (info ParseRestrictedAccountInfo) GetStorageUsed(
	address common.Address,
) (
	uint64,
	error,
)

type ParseRestrictedAccountKeyReader 

type ParseRestrictedAccountKeyReader struct {
	// contains filtered or unexported fields
}

func (ParseRestrictedAccountKeyReader) AccountKeysCount 

func (reader ParseRestrictedAccountKeyReader) AccountKeysCount(address runtime.Address) (uint64, error)

func (ParseRestrictedAccountKeyReader) GetAccountKey 

func (reader ParseRestrictedAccountKeyReader) GetAccountKey(
	address runtime.Address,
	keyIndex int,
) (
	*runtime.AccountKey,
	error,
)

type ParseRestrictedAccountKeyUpdater 

type ParseRestrictedAccountKeyUpdater struct {
	// contains filtered or unexported fields
}

func NewParseRestrictedAccountKeyUpdater 

func NewParseRestrictedAccountKeyUpdater(
	txnState *state.TransactionState,
	impl AccountKeyUpdater,
) ParseRestrictedAccountKeyUpdater

func (ParseRestrictedAccountKeyUpdater) AddAccountKey 

func (updater ParseRestrictedAccountKeyUpdater) AddAccountKey(
	address runtime.Address,
	publicKey *runtime.PublicKey,
	hashAlgo runtime.HashAlgorithm,
	weight int,
) (
	*runtime.AccountKey,
	error,
)

func (ParseRestrictedAccountKeyUpdater) AddEncodedAccountKey 

func (updater ParseRestrictedAccountKeyUpdater) AddEncodedAccountKey(
	address runtime.Address,
	publicKey []byte,
) error

func (ParseRestrictedAccountKeyUpdater) RevokeAccountKey 

func (updater ParseRestrictedAccountKeyUpdater) RevokeAccountKey(
	address runtime.Address,
	keyIndex int,
) (
	*runtime.AccountKey,
	error,
)

func (ParseRestrictedAccountKeyUpdater) RevokeEncodedAccountKey 

func (updater ParseRestrictedAccountKeyUpdater) RevokeEncodedAccountKey(
	address runtime.Address,
	index int,
) (
	[]byte,
	error,
)

type ParseRestrictedBlockInfo 

type ParseRestrictedBlockInfo struct {
	// contains filtered or unexported fields
}

func (ParseRestrictedBlockInfo) GetBlockAtHeight 

func (info ParseRestrictedBlockInfo) GetBlockAtHeight(
	height uint64,
) (
	runtime.Block,
	bool,
	error,
)

func (ParseRestrictedBlockInfo) GetCurrentBlockHeight 

func (info ParseRestrictedBlockInfo) GetCurrentBlockHeight() (uint64, error)

type ParseRestrictedContractUpdater 

type ParseRestrictedContractUpdater struct {
	// contains filtered or unexported fields
}

func NewParseRestrictedContractUpdater 

func NewParseRestrictedContractUpdater(
	txnState *state.TransactionState,
	impl ContractUpdater,
) ParseRestrictedContractUpdater

func (ParseRestrictedContractUpdater) Commit 

func (updater ParseRestrictedContractUpdater) Commit() (
	[]ContractUpdateKey,
	error,
)

func (ParseRestrictedContractUpdater) RemoveAccountContractCode 

func (updater ParseRestrictedContractUpdater) RemoveAccountContractCode(
	address runtime.Address,
	name string,
) error

func (ParseRestrictedContractUpdater) Reset 

func (updater ParseRestrictedContractUpdater) Reset()

func (ParseRestrictedContractUpdater) UpdateAccountContractCode 

func (updater ParseRestrictedContractUpdater) UpdateAccountContractCode(
	address runtime.Address,
	name string,
	code []byte,
) error

type ParseRestrictedCryptoLibrary 

type ParseRestrictedCryptoLibrary struct {
	// contains filtered or unexported fields
}

func (ParseRestrictedCryptoLibrary) BLSAggregatePublicKeys 

func (lib ParseRestrictedCryptoLibrary) BLSAggregatePublicKeys(
	keys []*runtime.PublicKey,
) (
	*runtime.PublicKey,
	error,
)

func (ParseRestrictedCryptoLibrary) BLSAggregateSignatures 

func (lib ParseRestrictedCryptoLibrary) BLSAggregateSignatures(
	sigs [][]byte,
) (
	[]byte,
	error,
)

func (ParseRestrictedCryptoLibrary) BLSVerifyPOP 

func (lib ParseRestrictedCryptoLibrary) BLSVerifyPOP(
	pk *runtime.PublicKey,
	sig []byte,
) (
	bool,
	error,
)

func (ParseRestrictedCryptoLibrary) Hash 

func (lib ParseRestrictedCryptoLibrary) Hash(
	data []byte,
	tag string,
	hashAlgorithm runtime.HashAlgorithm,
) (
	[]byte,
	error,
)

func (ParseRestrictedCryptoLibrary) ValidatePublicKey 

func (lib ParseRestrictedCryptoLibrary) ValidatePublicKey(
	pk *runtime.PublicKey,
) error

func (ParseRestrictedCryptoLibrary) VerifySignature 

func (lib ParseRestrictedCryptoLibrary) VerifySignature(
	signature []byte,
	tag string,
	signedData []byte,
	publicKey []byte,
	signatureAlgorithm runtime.SignatureAlgorithm,
	hashAlgorithm runtime.HashAlgorithm,
) (
	bool,
	error,
)

type ParseRestrictedEventEmitter 

type ParseRestrictedEventEmitter struct {
	// contains filtered or unexported fields
}

func (ParseRestrictedEventEmitter) EmitEvent 

func (emitter ParseRestrictedEventEmitter) EmitEvent(event cadence.Event) error

func (ParseRestrictedEventEmitter) Events 

func (emitter ParseRestrictedEventEmitter) Events() []flow.Event

func (ParseRestrictedEventEmitter) Reset 

func (emitter ParseRestrictedEventEmitter) Reset()

func (ParseRestrictedEventEmitter) ServiceEvents 

func (emitter ParseRestrictedEventEmitter) ServiceEvents() []flow.Event

type ParseRestrictedTransactionInfo 

type ParseRestrictedTransactionInfo struct {
	// contains filtered or unexported fields
}

func (ParseRestrictedTransactionInfo) GetSigningAccounts 

func (info ParseRestrictedTransactionInfo) GetSigningAccounts() (
	[]runtime.Address,
	error,
)

func (ParseRestrictedTransactionInfo) IsServiceAccountAuthorizer 

func (info ParseRestrictedTransactionInfo) IsServiceAccountAuthorizer() bool

func (ParseRestrictedTransactionInfo) LimitAccountStorage 

func (info ParseRestrictedTransactionInfo) LimitAccountStorage() bool

func (ParseRestrictedTransactionInfo) SigningAccounts 

func (info ParseRestrictedTransactionInfo) SigningAccounts() []runtime.Address

func (ParseRestrictedTransactionInfo) TransactionFeesEnabled 

func (info ParseRestrictedTransactionInfo) TransactionFeesEnabled() bool

func (ParseRestrictedTransactionInfo) TxID 

func (info ParseRestrictedTransactionInfo) TxID() flow.Identifier

func (ParseRestrictedTransactionInfo) TxIndex 

func (info ParseRestrictedTransactionInfo) TxIndex() uint32

type ParseRestrictedUUIDGenerator 

type ParseRestrictedUUIDGenerator struct {
	// contains filtered or unexported fields
}

func (ParseRestrictedUUIDGenerator) GenerateUUID 

func (generator ParseRestrictedUUIDGenerator) GenerateUUID() (uint64, error)

type ParseRestrictedUnsafeRandomGenerator 

type ParseRestrictedUnsafeRandomGenerator struct {
	// contains filtered or unexported fields
}

func (ParseRestrictedUnsafeRandomGenerator) UnsafeRandom 

func (gen ParseRestrictedUnsafeRandomGenerator) UnsafeRandom() (
	uint64,
	error,
)

type ParseRestrictedValueStore 

type ParseRestrictedValueStore struct {
	// contains filtered or unexported fields
}

func (ParseRestrictedValueStore) AllocateStorageIndex 

func (store ParseRestrictedValueStore) AllocateStorageIndex(
	owner []byte,
) (
	atree.StorageIndex,
	error,
)

func (ParseRestrictedValueStore) GetValue 

func (store ParseRestrictedValueStore) GetValue(
	owner []byte,
	key []byte,
) (
	[]byte,
	error,
)

func (ParseRestrictedValueStore) SetValue 

func (store ParseRestrictedValueStore) SetValue(
	owner []byte,
	key []byte,
	value []byte,
) error

func (ParseRestrictedValueStore) ValueExists 

func (store ParseRestrictedValueStore) ValueExists(
	owner []byte,
	key []byte,
) (
	bool,
	error,
)

type ProgramInvalidator 

type ProgramInvalidator struct {
	DerivedDataInvalidator
}

func (ProgramInvalidator) ShouldInvalidateEntries 

func (invalidator ProgramInvalidator) ShouldInvalidateEntries() bool

func (ProgramInvalidator) ShouldInvalidateEntry 

func (invalidator ProgramInvalidator) ShouldInvalidateEntry(
	location common.AddressLocation,
	program *derived.Program,
	state *state.State,
) bool

type ProgramLogger 

type ProgramLogger struct {
	ProgramLoggerParams
	// contains filtered or unexported fields
}

func NewProgramLogger 

func NewProgramLogger(
	tracer tracing.TracerSpan,
	params ProgramLoggerParams,
) *ProgramLogger

func (*ProgramLogger) ImplementationDebugLog 

func (logger *ProgramLogger) ImplementationDebugLog(message string) error

func (*ProgramLogger) Logger 

func (logger *ProgramLogger) Logger() *zerolog.Logger

func (*ProgramLogger) Logs 

func (logger *ProgramLogger) Logs() []string

func (*ProgramLogger) ProgramChecked 

func (logger *ProgramLogger) ProgramChecked(
	location common.Location,
	duration time.Duration,
)

ProgramChecked captures time spent on checking a code at specific location

func (*ProgramLogger) ProgramInterpreted 

func (logger *ProgramLogger) ProgramInterpreted(
	location common.Location,
	duration time.Duration,
)

ProgramInterpreted captures time spent on interpreting a code at specific location

func (*ProgramLogger) ProgramLog 

func (logger *ProgramLogger) ProgramLog(message string) error

func (*ProgramLogger) ProgramParsed 

func (logger *ProgramLogger) ProgramParsed(
	location common.Location,
	duration time.Duration,
)

ProgramParsed captures time spent on parsing a code at specific location

func (*ProgramLogger) RecordTrace 

func (logger *ProgramLogger) RecordTrace(
	operation string,
	location common.Location,
	duration time.Duration,
	attrs []attribute.KeyValue,
)

func (*ProgramLogger) ValueDecoded 

func (logger *ProgramLogger) ValueDecoded(duration time.Duration)

ValueDecoded accumulates time spend on runtime value decoding

func (*ProgramLogger) ValueEncoded 

func (logger *ProgramLogger) ValueEncoded(duration time.Duration)

ValueEncoded accumulates time spend on runtime value encoding

type ProgramLoggerParams 

type ProgramLoggerParams struct {
	zerolog.Logger

	CadenceLoggingEnabled bool

	MetricsReporter
}

func DefaultProgramLoggerParams 

func DefaultProgramLoggerParams() ProgramLoggerParams

type Programs 

type Programs struct {
	// contains filtered or unexported fields
}

Programs manages operations around cadence program parsing.

Note that cadence guarantees that Get/Set methods are called in a LIFO manner. Hence, we create new nested transactions on Get calls and commit these nested transactions on Set calls in order to capture the states needed for parsing the programs.

func NewPrograms 

func NewPrograms(
	tracer tracing.TracerSpan,
	meter Meter,
	txnState *state.TransactionState,
	accounts Accounts,
	derivedTxnData DerivedTransactionData,
) *Programs

NewPrograms construts a new ProgramHandler

func (*Programs) DecodeArgument 

func (programs *Programs) DecodeArgument(
	bytes []byte,
	_ cadence.Type,
) (
	cadence.Value,
	error,
)

func (*Programs) GetProgram 

func (programs *Programs) GetProgram(
	location common.Location,
) (
	*interpreter.Program,
	error,
)

func (*Programs) SetProgram 

func (programs *Programs) SetProgram(
	location common.Location,
	program *interpreter.Program,
) error

type Runtime 

type Runtime struct {
	RuntimeParams
	// contains filtered or unexported fields
}

Runtime expose the cadence runtime to the rest of the envionment package.

func NewRuntime 

func NewRuntime(params RuntimeParams) *Runtime

func (*Runtime) BorrowCadenceRuntime 

func (runtime *Runtime) BorrowCadenceRuntime() *runtime.ReusableCadenceRuntime

func (*Runtime) ReturnCadenceRuntime 

func (runtime *Runtime) ReturnCadenceRuntime(
	reusable *runtime.ReusableCadenceRuntime,
)

func (*Runtime) SetEnvironment 

func (runtime *Runtime) SetEnvironment(env Environment)

type RuntimeParams 

type RuntimeParams struct {
	runtime.ReusableCadenceRuntimePool
}

func DefaultRuntimeParams 

func DefaultRuntimeParams() RuntimeParams

type StatefulAccounts 

type StatefulAccounts struct {
	// contains filtered or unexported fields
}

func NewAccounts 

func NewAccounts(txnState *state.TransactionState) *StatefulAccounts

func (*StatefulAccounts) AllocateStorageIndex 

func (a *StatefulAccounts) AllocateStorageIndex(address flow.Address) (atree.StorageIndex, error)

func (*StatefulAccounts) AppendPublicKey 

func (a *StatefulAccounts) AppendPublicKey(address flow.Address, publicKey flow.AccountPublicKey) error

func (*StatefulAccounts) CheckAccountNotFrozen 

func (a *StatefulAccounts) CheckAccountNotFrozen(address flow.Address) error

handy function to error out if account is frozen

func (*StatefulAccounts) ContractExists 

func (a *StatefulAccounts) ContractExists(contractName string, address flow.Address) (bool, error)

func (*StatefulAccounts) Create 

func (a *StatefulAccounts) Create(publicKeys []flow.AccountPublicKey, newAddress flow.Address) error

Create account sets all required registers on an address.

func (*StatefulAccounts) DeleteContract 

func (a *StatefulAccounts) DeleteContract(contractName string, address flow.Address) error

func (*StatefulAccounts) Exists 

func (a *StatefulAccounts) Exists(address flow.Address) (bool, error)

func (*StatefulAccounts) Get 

func (a *StatefulAccounts) Get(address flow.Address) (*flow.Account, error)

func (*StatefulAccounts) GetAccountFrozen 

func (a *StatefulAccounts) GetAccountFrozen(address flow.Address) (bool, error)

func (*StatefulAccounts) GetContract 

func (a *StatefulAccounts) GetContract(contractName string, address flow.Address) ([]byte, error)

func (*StatefulAccounts) GetContractNames 

func (a *StatefulAccounts) GetContractNames(address flow.Address) ([]string, error)

GetContractNames gets a sorted list of names of contracts deployed on an address

func (*StatefulAccounts) GetPublicKey 

func (a *StatefulAccounts) GetPublicKey(address flow.Address, keyIndex uint64) (flow.AccountPublicKey, error)

func (*StatefulAccounts) GetPublicKeyCount 

func (a *StatefulAccounts) GetPublicKeyCount(address flow.Address) (uint64, error)

func (*StatefulAccounts) GetPublicKeys 

func (a *StatefulAccounts) GetPublicKeys(address flow.Address) (publicKeys []flow.AccountPublicKey, err error)

func (*StatefulAccounts) GetStorageUsed 

func (a *StatefulAccounts) GetStorageUsed(address flow.Address) (uint64, error)

GetStorageUsed returns the amount of storage used in bytes by this account

func (*StatefulAccounts) GetValue 

func (a *StatefulAccounts) GetValue(address flow.Address, key string) (flow.RegisterValue, error)

func (*StatefulAccounts) SetAccountFrozen 

func (a *StatefulAccounts) SetAccountFrozen(address flow.Address, frozen bool) error

func (*StatefulAccounts) SetAllPublicKeys 

func (a *StatefulAccounts) SetAllPublicKeys(address flow.Address, publicKeys []flow.AccountPublicKey) error

func (*StatefulAccounts) SetContract 

func (a *StatefulAccounts) SetContract(contractName string, address flow.Address, contract []byte) error

func (*StatefulAccounts) SetPublicKey 

func (a *StatefulAccounts) SetPublicKey(
	address flow.Address,
	keyIndex uint64,
	publicKey flow.AccountPublicKey,
) (encodedPublicKey []byte, err error)

func (*StatefulAccounts) SetValue 

func (a *StatefulAccounts) SetValue(address flow.Address, key string, value flow.RegisterValue) error

SetValue sets a value in address' storage

func (*StatefulAccounts) TouchContract 

func (a *StatefulAccounts) TouchContract(contractName string, address flow.Address)

type SystemContracts 

type SystemContracts struct {
	// contains filtered or unexported fields
}

SystemContracts provides methods for invoking system contract functions as service account.

func NewSystemContracts 

func NewSystemContracts(
	chain flow.Chain,
	tracer tracing.TracerSpan,
	logger *ProgramLogger,
	runtime *Runtime,
) *SystemContracts

func (*SystemContracts) AccountAvailableBalance 

func (sys *SystemContracts) AccountAvailableBalance(
	address common.Address,
) (cadence.Value, error)

AccountAvailableBalance executes the get available balance contract on the storage fees contract.

func (*SystemContracts) AccountBalance 

func (sys *SystemContracts) AccountBalance(
	address common.Address,
) (cadence.Value, error)

AccountBalance executes the get available balance contract on the service account.

func (*SystemContracts) AccountStorageCapacity 

func (sys *SystemContracts) AccountStorageCapacity(
	address common.Address,
) (cadence.Value, error)

AccountStorageCapacity executes the get storage capacity contract on the service account.

func (*SystemContracts) AccountsStorageCapacity 

func (sys *SystemContracts) AccountsStorageCapacity(
	addresses []common.Address,
	payer common.Address,
	maxTxFees uint64,
) (cadence.Value, error)

AccountsStorageCapacity gets storage capacity for multiple accounts at once.

func (*SystemContracts) CheckPayerBalanceAndGetMaxTxFees 

func (sys *SystemContracts) CheckPayerBalanceAndGetMaxTxFees(
	payer flow.Address,
	inclusionEffort uint64,
	maxExecutionEffort uint64,
) (cadence.Value, error)

CheckPayerBalanceAndGetMaxTxFees executes the verifyPayersBalanceForTransactionExecution on the FlowFees account. It checks whether the given payer has enough balance to cover inclusion fee and max execution fee. It returns (maxTransactionFee, ErrCodeInsufficientPayerBalance) if the payer doesn't have enough balance It returns (maxTransactionFee, nil) if the payer has enough balance

func (*SystemContracts) DeductTransactionFees 

func (sys *SystemContracts) DeductTransactionFees(
	payer flow.Address,
	inclusionEffort uint64,
	executionEffort uint64,
) (cadence.Value, error)

DeductTransactionFees executes the fee deduction function on the FlowFees account.

func (*SystemContracts) Invoke 

func (sys *SystemContracts) Invoke(
	spec ContractFunctionSpec,
	arguments []cadence.Value,
) (
	cadence.Value,
	error,
)

func (*SystemContracts) SetupNewAccount 

func (sys *SystemContracts) SetupNewAccount(
	flowAddress flow.Address,
	payer common.Address,
) (cadence.Value, error)

SetupNewAccount executes the new account setup contract on the service account.

func (*SystemContracts) UseContractAuditVoucher 

func (sys *SystemContracts) UseContractAuditVoucher(
	address common.Address,
	code string,
) (bool, error)

UseContractAuditVoucher executes the use a contract deployment audit voucher contract.

type TransactionInfo 

type TransactionInfo interface {
	TxIndex() uint32
	TxID() flow.Identifier

	TransactionFeesEnabled() bool
	LimitAccountStorage() bool

	SigningAccounts() []runtime.Address

	IsServiceAccountAuthorizer() bool

	// Cadence's runtime API.  Note that the script variant will return
	// OperationNotSupportedError.
	GetSigningAccounts() ([]runtime.Address, error)
}

TransactionInfo exposes information associated with the executing transaction.

Note that scripts have no associated transaction information, but must expose the API in compliance with the runtime environment interface.

func NewParseRestrictedTransactionInfo 

func NewParseRestrictedTransactionInfo(
	txnState *state.TransactionState,
	impl TransactionInfo,
) TransactionInfo

func NewTransactionInfo 

func NewTransactionInfo(
	params TransactionInfoParams,
	tracer tracing.TracerSpan,
	serviceAccount flow.Address,
) TransactionInfo

type TransactionInfoParams 

type TransactionInfoParams struct {
	TxIndex uint32
	TxId    flow.Identifier
	TxBody  *flow.TransactionBody

	TransactionFeesEnabled bool
	LimitAccountStorage    bool
}

func DefaultTransactionInfoParams 

func DefaultTransactionInfoParams() TransactionInfoParams

type UUIDGenerator 

type UUIDGenerator interface {
	GenerateUUID() (uint64, error)
}

func NewParseRestrictedUUIDGenerator 

func NewParseRestrictedUUIDGenerator(
	txnState *state.TransactionState,
	impl UUIDGenerator,
) UUIDGenerator

type UnsafeRandomGenerator 

type UnsafeRandomGenerator interface {
	// UnsafeRandom returns a random uint64, where the process of random number
	// derivation is not cryptographically secure.
	UnsafeRandom() (uint64, error)
}

func NewParseRestrictedUnsafeRandomGenerator 

func NewParseRestrictedUnsafeRandomGenerator(
	txnState *state.TransactionState,
	impl UnsafeRandomGenerator,
) UnsafeRandomGenerator

func NewUnsafeRandomGenerator 

func NewUnsafeRandomGenerator(
	tracer tracing.TracerSpan,
	blockHeader *flow.Header,
) UnsafeRandomGenerator

type ValueStore 

type ValueStore interface {
	GetValue(owner []byte, key []byte) ([]byte, error)

	SetValue(owner, key, value []byte) error

	ValueExists(owner []byte, key []byte) (bool, error)

	AllocateStorageIndex(owner []byte) (atree.StorageIndex, error)
}

ValueStore provides read/write access to the account storage.

func NewParseRestrictedValueStore 

func NewParseRestrictedValueStore(
	txnState *state.TransactionState,
	impl ValueStore,
) ValueStore

func NewValueStore 

func NewValueStore(
	tracer tracing.TracerSpan,
	meter Meter,
	accounts Accounts,
) ValueStore

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